Scarce Set 12 1906 San Francisco California Earthquake Fire Rotograph Postcards. Scarce Set 12 1906 San Francisco California Earthquake Fire Rotograph Postcards Rotograph issued an unlettered set depicting scenes from the San Francisco earthquake soon after the event. They are printed in an uncharacteristic double halftone in red and black on different colored papers; and were most likely contracted out to a local California printer. The photographs these cards were made from were copyrighted by the San Francisco Ruins Publishing Company and O. Size: 3 1/2 x 5 1/2 inches Item in an acid free sleeve. Powered by SixBit’s eCommerce Solution.